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   <div id="projectname">RT-Thread RTOS
   &#160;<span id="projectnumber">1.2.0</span>
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   <div id="projectbrief">An open source embedded real-time operating system</div>
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<a href="#define-members">Macros</a> &#124;
<a href="#func-members">Functions</a>  </div>
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<div class="title">Other useful kernel service<div class="ingroups"><a class="el" href="group___kernel.html">RT-Thread Kernel API</a></div></div>  </div>
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Macros</h2></td></tr>
<tr class="memitem:ga52568d5666fbf7f7f5d0b96149d5ebd1"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga52568d5666fbf7f7f5d0b96149d5ebd1">rt_list_entry</a>(node, type, member)&#160;&#160;&#160;((type *)((char *)(node) - (unsigned long)(&amp;((type *)0)-&gt;member)))</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ga02ccef35d98a60385ce86d14c0bad9d0"><td class="memItemLeft" align="right" valign="top">int *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga02ccef35d98a60385ce86d14c0bad9d0">_rt_errno</a> (void)</td></tr>
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<tr class="memitem:ga3a32f9ba466a610a23e127c74f37d7c2"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga3a32f9ba466a610a23e127c74f37d7c2">rt_memset</a> (void *s, int c, <a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> count)</td></tr>
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<tr class="memitem:gacbe2d70e90f1ce1ea00dd61621b97981"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#gacbe2d70e90f1ce1ea00dd61621b97981">rt_memcpy</a> (void *dst, const void *src, <a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> count)</td></tr>
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<tr class="memitem:gae87b3a1321fb564b12e97960ef41b500"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#gae87b3a1321fb564b12e97960ef41b500">rt_memmove</a> (void *dest, const void *src, <a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> n)</td></tr>
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<tr class="memitem:ga4fe9ceae2937c508dd668aaec1019ae8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___basic_def.html#gae5c6ccee15f067714ca9c44e509c4047">rt_int32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga4fe9ceae2937c508dd668aaec1019ae8">rt_memcmp</a> (const void *cs, const void *ct, <a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> count)</td></tr>
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<tr class="memitem:gad986e7ef38f22c0c612e8467a25a19ef"><td class="memItemLeft" align="right" valign="top">char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#gad986e7ef38f22c0c612e8467a25a19ef">rt_strstr</a> (const char *s1, const char *s2)</td></tr>
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<tr class="memitem:gabede2807983559147cec27e438a0dbeb"><td class="memItemLeft" align="right" valign="top">char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#gabede2807983559147cec27e438a0dbeb">rt_strncpy</a> (char *dst, const char *src, <a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> n)</td></tr>
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<tr class="memitem:gad45fdd0ca4553763ed24a9dd4c42793f"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#gad45fdd0ca4553763ed24a9dd4c42793f">rt_strncmp</a> (const char *cs, const char *ct, <a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> count)</td></tr>
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<tr class="memitem:ga322e6a53d471e6582b4f82e0d86d10ea"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga322e6a53d471e6582b4f82e0d86d10ea">rt_strcmp</a> (const char *cs, const char *ct)</td></tr>
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<tr class="memitem:ga1c4a4101a636340284e05b0ae801e60a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga1c4a4101a636340284e05b0ae801e60a">rt_strlen</a> (const char *s)</td></tr>
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<tr class="memitem:ga3424d273c715bc14e81e2e608287216a"><td class="memItemLeft" align="right" valign="top">char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga3424d273c715bc14e81e2e608287216a">rt_strdup</a> (const char *s)</td></tr>
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<tr class="memitem:ga11ecdcdb5b09e6e18b52625c1e904dca"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga11ecdcdb5b09e6e18b52625c1e904dca">rt_show_version</a> (void)</td></tr>
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<tr class="memitem:ga62a425223db6edffa3d9ab8f766eb992"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___basic_def.html#gae5c6ccee15f067714ca9c44e509c4047">rt_int32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga62a425223db6edffa3d9ab8f766eb992">rt_snprintf</a> (char *buf, <a class="el" href="group___basic_def.html#ga8011d259fdfc54b8a9aa006b4d49ac14">rt_size_t</a> size, const char *fmt,...)</td></tr>
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<tr class="memitem:ga54ff1f90de6258f0e24a89914a94d98e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___basic_def.html#gae5c6ccee15f067714ca9c44e509c4047">rt_int32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga54ff1f90de6258f0e24a89914a94d98e">rt_vsprintf</a> (char *buf, const char *format, va_list arg_ptr)</td></tr>
<tr class="separator:ga54ff1f90de6258f0e24a89914a94d98e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga36c861ec1a7eac18e2bd5b9bdce2f176"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___basic_def.html#gae5c6ccee15f067714ca9c44e509c4047">rt_int32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga36c861ec1a7eac18e2bd5b9bdce2f176">rt_sprintf</a> (char *buf, const char *format,...)</td></tr>
<tr class="separator:ga36c861ec1a7eac18e2bd5b9bdce2f176"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaf2654f08787ce7935c635c0343970f6a"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#gaf2654f08787ce7935c635c0343970f6a">rt_malloc_align</a> (<a class="el" href="group___basic_def.html#ga8011d259fdfc54b8a9aa006b4d49ac14">rt_size_t</a> size, <a class="el" href="group___basic_def.html#ga8011d259fdfc54b8a9aa006b4d49ac14">rt_size_t</a> align)</td></tr>
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<tr class="memitem:gabf1ea8f43781620e7b08fb1868e32b92"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#gabf1ea8f43781620e7b08fb1868e32b92">rt_free_align</a> (void *ptr)</td></tr>
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<tr class="memitem:gaf225812decad1a6d9036626273ba9e65"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#gaf225812decad1a6d9036626273ba9e65">__rt_ffs</a> (int value)</td></tr>
<tr class="separator:gaf225812decad1a6d9036626273ba9e65"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga7103f52aa8c7402c9e87f03942d8bc9f"><td class="memItemLeft" align="right" valign="top">rt_inline void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga7103f52aa8c7402c9e87f03942d8bc9f">rt_list_init</a> (rt_list_t *l)</td></tr>
<tr class="separator:ga7103f52aa8c7402c9e87f03942d8bc9f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga7d57c901bb0ee4e1b9ed92a5a196cc39"><td class="memItemLeft" align="right" valign="top">rt_inline void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga7d57c901bb0ee4e1b9ed92a5a196cc39">rt_list_insert_after</a> (rt_list_t *l, rt_list_t *n)</td></tr>
<tr class="separator:ga7d57c901bb0ee4e1b9ed92a5a196cc39"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga31047c521c265353f8372043fb6ff5ef"><td class="memItemLeft" align="right" valign="top">rt_inline void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga31047c521c265353f8372043fb6ff5ef">rt_list_insert_before</a> (rt_list_t *l, rt_list_t *n)</td></tr>
<tr class="separator:ga31047c521c265353f8372043fb6ff5ef"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga0525e5898dd57464613551b887256c28"><td class="memItemLeft" align="right" valign="top">rt_inline void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga0525e5898dd57464613551b887256c28">rt_list_remove</a> (rt_list_t *n)</td></tr>
<tr class="separator:ga0525e5898dd57464613551b887256c28"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga2b25b69a89568b7f2bf6ed5e9e70da74"><td class="memItemLeft" align="right" valign="top">rt_inline int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___kernel_service.html#ga2b25b69a89568b7f2bf6ed5e9e70da74">rt_list_isempty</a> (const rt_list_t *l)</td></tr>
<tr class="separator:ga2b25b69a89568b7f2bf6ed5e9e70da74"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="ga52568d5666fbf7f7f5d0b96149d5ebd1"></a>
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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define rt_list_entry</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">node, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">type, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">member&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td>&#160;&#160;&#160;((type *)((char *)(node) - (unsigned long)(&amp;((type *)0)-&gt;member)))</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>get the struct for this entry </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">node</td><td>the entry point </td></tr>
    <tr><td class="paramname">type</td><td>the type of structure </td></tr>
    <tr><td class="paramname">member</td><td>the name of list in structure </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="ga02ccef35d98a60385ce86d14c0bad9d0"></a>
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          <td class="memname">int * _rt_errno </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>This function returns errno.</p>
<dl class="section return"><dt>Returns</dt><dd>the errno in the system </dd></dl>

</div>
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          <td class="memname">void * rt_memset </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>s</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>c</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>This function will set the content of memory to specified value</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">s</td><td>the address of source memory </td></tr>
    <tr><td class="paramname">c</td><td>the value shall be set in content </td></tr>
    <tr><td class="paramname">count</td><td>the copied length</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the address of source memory </dd></dl>

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          <td class="memname">void * rt_memcpy </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>dst</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>src</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will copy memory content from source address to destination address.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">dst</td><td>the address of destination memory </td></tr>
    <tr><td class="paramname">src</td><td>the address of source memory </td></tr>
    <tr><td class="paramname">count</td><td>the copied length</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the address of destination memory </dd></dl>

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          <td class="memname">void * rt_memmove </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>dest</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>src</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td>
          <td class="paramname"><em>n</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will move memory content from source address to destination address.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">dest</td><td>the address of destination memory </td></tr>
    <tr><td class="paramname">src</td><td>the address of source memory </td></tr>
    <tr><td class="paramname">n</td><td>the copied length</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the address of destination memory </dd></dl>

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          <td class="memname"><a class="el" href="group___basic_def.html#gae5c6ccee15f067714ca9c44e509c4047">rt_int32_t</a> rt_memcmp </td>
          <td>(</td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>cs</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>ct</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will compare two areas of memory</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">cs</td><td>one area of memory </td></tr>
    <tr><td class="paramname">ct</td><td>znother area of memory </td></tr>
    <tr><td class="paramname">count</td><td>the size of the area</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the result </dd></dl>

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          <td class="memname">char * rt_strstr </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>s1</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>s2</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will return the first occurrence of a string.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">s1</td><td>the source string </td></tr>
    <tr><td class="paramname">s2</td><td>the find string</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the first occurrence of a s2 in s1, or RT_NULL if no found. </dd></dl>

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          <td class="memname"><a class="el" href="group___basic_def.html#ga909edcac80e5e3f93f63fcebc95922c7">rt_uint32_t</a> rt_strcasecmp </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>a</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>b</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will compare two strings while ignoring differences in case</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">a</td><td>the string to be compared </td></tr>
    <tr><td class="paramname">b</td><td>the string to be compared</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the result </dd></dl>

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          <td class="memname">char * rt_strncpy </td>
          <td>(</td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>dst</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>src</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td>
          <td class="paramname"><em>n</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will copy string no more than n bytes.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">dst</td><td>the string to copy </td></tr>
    <tr><td class="paramname">src</td><td>the string to be copied </td></tr>
    <tr><td class="paramname">n</td><td>the maximum copied length</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the result </dd></dl>

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          <td class="memname"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> rt_strncmp </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>cs</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>ct</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a>&#160;</td>
          <td class="paramname"><em>count</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will compare two strings with specified maximum length</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">cs</td><td>the string to be compared </td></tr>
    <tr><td class="paramname">ct</td><td>the string to be compared </td></tr>
    <tr><td class="paramname">count</td><td>the maximum compare length</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the result </dd></dl>

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          <td class="memname"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> rt_strcmp </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>cs</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>ct</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>This function will compare two strings without specified length</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">cs</td><td>the string to be compared </td></tr>
    <tr><td class="paramname">ct</td><td>the string to be compared</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the result </dd></dl>

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          <td class="memname"><a class="el" href="group___basic_def.html#ga958cc0f5d3f7bf59850cd8bd13a4aeb0">rt_ubase_t</a> rt_strlen </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>s</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>This function will return the length of a string, which terminate will null character.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">s</td><td>the string</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length of string </dd></dl>

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          <td class="memname">char * rt_strdup </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>s</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>This function will duplicate a string.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">s</td><td>the string to be duplicated</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the duplicated string pointer </dd></dl>

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          <td class="memname">void rt_show_version </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>This function will show the version of rt-thread rtos </p>

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          <td class="memname"><a class="el" href="group___basic_def.html#gae5c6ccee15f067714ca9c44e509c4047">rt_int32_t</a> rt_snprintf </td>
          <td>(</td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>buf</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga8011d259fdfc54b8a9aa006b4d49ac14">rt_size_t</a>&#160;</td>
          <td class="paramname"><em>size</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>fmt</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname"><em>...</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will fill a formatted string to buffer</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">buf</td><td>the buffer to save formatted string </td></tr>
    <tr><td class="paramname">size</td><td>the size of buffer </td></tr>
    <tr><td class="paramname">fmt</td><td>the format </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname"><a class="el" href="group___basic_def.html#gae5c6ccee15f067714ca9c44e509c4047">rt_int32_t</a> rt_vsprintf </td>
          <td>(</td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>buf</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>format</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">va_list&#160;</td>
          <td class="paramname"><em>arg_ptr</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function will fill a formatted string to buffer</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">buf</td><td>the buffer to save formatted string </td></tr>
    <tr><td class="paramname">arg_ptr</td><td>the arg_ptr </td></tr>
    <tr><td class="paramname">format</td><td>the format </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname"><a class="el" href="group___basic_def.html#gae5c6ccee15f067714ca9c44e509c4047">rt_int32_t</a> rt_sprintf </td>
          <td>(</td>
          <td class="paramtype">char *&#160;</td>
          <td class="paramname"><em>buf</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>format</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname"><em>...</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>This function will fill a formatted string to buffer</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">buf</td><td>the buffer to save formatted string </td></tr>
    <tr><td class="paramname">format</td><td>the format </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">void* rt_malloc_align </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga8011d259fdfc54b8a9aa006b4d49ac14">rt_size_t</a>&#160;</td>
          <td class="paramname"><em>size</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group___basic_def.html#ga8011d259fdfc54b8a9aa006b4d49ac14">rt_size_t</a>&#160;</td>
          <td class="paramname"><em>align</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>This function allocates a memory block, which address is aligned to the specified alignment size.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">size</td><td>the allocated memory block size </td></tr>
    <tr><td class="paramname">align</td><td>the alignment size</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the allocated memory block on successful, otherwise returns RT_NULL </dd></dl>

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          <td class="memname">void rt_free_align </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>ptr</em></td><td>)</td>
          <td></td>
        </tr>
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<p>This function release the memory block, which is allocated by rt_malloc_align function and address is aligned.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">ptr</td><td>the memory block pointer </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">int __rt_ffs </td>
          <td>(</td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>value</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>This function finds the first bit set (beginning with the least significant bit) in value and return the index of that bit.</p>
<p>Bits are numbered starting at 1 (the least significant bit). A return value of zero from any of these functions means that the argument was zero.</p>
<dl class="section return"><dt>Returns</dt><dd>return the index of the first bit set. If value is 0, then this function shall return 0. </dd></dl>

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          <td class="memname">rt_inline void rt_list_init </td>
          <td>(</td>
          <td class="paramtype">rt_list_t *&#160;</td>
          <td class="paramname"><em>l</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>initialize a list </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">l</td><td>list to be initialized </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">rt_inline void rt_list_insert_after </td>
          <td>(</td>
          <td class="paramtype">rt_list_t *&#160;</td>
          <td class="paramname"><em>l</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">rt_list_t *&#160;</td>
          <td class="paramname"><em>n</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>insert a node after a list </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">l</td><td>list to insert it </td></tr>
    <tr><td class="paramname">n</td><td>new node to be inserted </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">rt_inline void rt_list_insert_before </td>
          <td>(</td>
          <td class="paramtype">rt_list_t *&#160;</td>
          <td class="paramname"><em>l</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">rt_list_t *&#160;</td>
          <td class="paramname"><em>n</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>insert a node before a list </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">n</td><td>new node to be inserted </td></tr>
    <tr><td class="paramname">l</td><td>list to insert it </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">rt_inline void rt_list_remove </td>
          <td>(</td>
          <td class="paramtype">rt_list_t *&#160;</td>
          <td class="paramname"><em>n</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>remove node from list. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">n</td><td>the node to remove from the list. </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">rt_inline int rt_list_isempty </td>
          <td>(</td>
          <td class="paramtype">const rt_list_t *&#160;</td>
          <td class="paramname"><em>l</em></td><td>)</td>
          <td></td>
        </tr>
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<p>tests whether a list is empty </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">l</td><td>the list to test. </td></tr>
  </table>
  </dd>
</dl>

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